Histopathology
MACROSCOPIC DESCRIPTION: "Brain tumour": Dusky purple nodule 14x10x7mm with haemorrhagic homogeneous cut surface.
MICROSCOPIC DESCRIPTION: The sections show a well-demarcated nodular tumour with scattered stromal cells in a background of many capillary-sized blood vessels. The tumour cells have mildly enlarged nuclei with hyperchromasia and foamy vacuolated cytoplasm. Mitoses are inconspicuous. There is no necrosis. The features are those of haemangioblastoma. There is no evidence of malignancy. Immunostains are to follow.
DIAGNOSIS: Brain tumour: Haemangioblastoma (WHO Grade I).